Pitman



(No Model.)

B. W. GAVDY.

PITMAN.

Patented Dec. 6,1887.

Z .w w W w I @51 1 @4101, nm m UNITED STATES PATENT OFFICE.

EDWARD W. OADY, OF MASON CITY, IOWA.

PITMAN.

SPECIFICATION forming part of Letters Patent No. 374,449, dated December6, 1887.

Application filed December 18, 1886. Serial No.221,994. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD W. CADY, a citizen of the United States,residing at Mason City, in the county of Oerro Gordo and State of Iowa,have invented a new and useful Improvement in PitmauOonnecting Devicesfor Mowers, of which the following is a specification.

My invention relates to improvements in pitman-connecting devices formowers; and it consists in certain novel features hereinafter firstfully described, and then pointed out in the claims.

In the accompanying drawings, which fully illustrate my invention,Figure 1 is a perspective view of my improved device, and Fig. 2 is acentral longitudinal vertical section of the same.

Referring to the drawings by letter, A designates the cutter-bar, and Bthe cuttenbar head, secured thereto at one end. This cutterbar head iscomposed of a triangular casting having open sides and having alongitudinal slot, 0, in its rear edge, through which the pitman passes.In the forward end of this triangular cutter-bar head I provide acoupling-block, E, which is secured adj ustably within the same by thesetscrew D, as shown. This set screw D is inserted through and works inthe end of the cutter-bar head. Its end bears against the block E, sothat by turning the said screw inward the block will be forced from theend of the cutter-bar head, thereby increasing the tension of the leafsprings, presently referred to. By turning the screw in the oppositedirection the block will be free to move toward the front end of thecutt-erbar head, thereby diminishing thetension of the springs.

E E designate two-leafsprings which have their forward ends secured toopposite sides of the coupling-block and their rear ends resting againstthe inner sides of the rear end walls of the casting or cutter-bar headon opposite sides of the slot 0. The pitman E has its front endconnected to the coupling-block E, and to the rear end of the said rodI. secure the band or yoke G, which encircles the eccentric H on thedriving-shaft I.

and the said rod communicates its motion directly to the cutter-bar.Inits forward move ment the pitman acts directly against theeouplingblock, and thereby actuates the cutter-bar head, and in itsbackward movement it acts upon the springs E to give the returnstroke tothe said cuttcrbar head. It will thus be seen that the springs serve tomake the strokes of the pitman smooth and even and also to overcome theeffects of the change of stroke. It will also be seen that the rear partof the cutter-bar head serves as a guide for the pitman, which passesthrough the slot therein, and the cutter-bar head serves also as a meansfor securing the cutter-bar.

My device is simplev and efficient, and its advantages will be readilyappreciated.

Having thus described my invention, what I elai m, and desire to secureby Letters Patent,

1. The combination of the cutter bar head having the slot 0, and thepitman secured within the cutter-bar head and passing through the slot0, and mechanism for reciprocating said pitman, substantially as setforth.

2. The combination of the cutter-bar head having the slot 0, the pitmansecured within the cutter-bar head and passingthrough the slot 0 andhaving the yoke or band, the eccentric, and the drivingshaft,substantially asspecified.

3. The combination of the cutterbar head, the coupling-block adj ustablysecured within the cutter-bar head, the pitman connected to thecouplingblock, the springs having one end secured to the coupling-blockand their other ends resting against the rear end of the cutterbar head,and mechanism for reciprocating the pitman, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

E. V. OADY.

Witnesses:

JAS. E. BLY'IHE, J. E. E. MURKLEY.

